Thermoelectric conversion material and thermoelectric conversion element

摘要

The present invention provides a thermoelectric conversion material composed of an oxide material represented by chemical formula A0.8-1.2Ta2O6-y, where A is calcium (Ca) alone or calcium (Ca) and at least one selected from magnesium (Mg), strontium (Sr), and barium (Ba), and y is larger than 0 but does not exceed 0.5 (0